The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 22, 2019
Filed:
Jan. 23, 2019
Applicant:
Innolux Corporation, Miao-Li County, TW;
Inventors:
Hidetoshi Watanabe, Miao-Li County, TW;
Kazuyuki Hashimoto, Miao-Li County, TW;
Assignee:
INNOLUX CORPORATION, Miao-Li County, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/32 (2016.01); H05B 33/08 (2006.01);
U.S. Cl.
CPC ...
H05B 33/0815 (2013.01); H05B 33/0845 (2013.01);
Abstract
An LED driving circuit for illuminating a first LED unit is provided. The LED driving circuit includes: a data latch circuit, a current source, and a PWM circuit. The data latch circuit latches a data signal according to a first latch signal to generate a first control signal. The current source generates a constant current. The PWM circuit periodically passes the constant current through the first LED unit according to the first control signal and an enable signal.